Physics – Condensed Matter – Materials Science
Scientific paper
2006-10-04
Physics
Condensed Matter
Materials Science
Scientific paper
Mulheran and Blackman have provided a simple and clear explanation of the scale invariance of the island size distribution at the early stage of film growth [Phil. Mag. Lett. 72, 55 (1995)]. Their theory is centered on the concept of capture zone properly identified by Voronoi cell. Here we substantiate experimentally their theory by studying the scale invariance of InAs quantum dots (QDs) forming on GaAs(001) substrate. In particular, we show that the volume distributions of QDs well overlap the corrisponding experimental distributions of the Voronoi-cell areas. The interplay between the experimental data and the numerical simulations allowed us to determine the spatial correlation length among QDs.
Arciprete F.
Balzarotti Adalberto
Fanfoni M.
Orsini Emmanuela
Patella F.
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